Plant for dyeing or other wet-treatment of textile material



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I PLANT '.FR DYEING 0R OTHER WET-TREAT- NENT F TEXTILE MATERIAL Bertil Fredrik Helgeson Mellbin, Vandgatan 11, Goteborg, Sweden' This invention relates to treatment of textile materials and more particularly to an apparatus for use in dyeing textile material such as cloth or the like in web formation.

In `dyeing or other wet-treatment of textile material the dye or the treating liquid is often applied by feeding the dry material in the shape of a web through a vat containing the treating bath, after which the web is conveyed between pressrolls, where the treating liquid is equalized over the material and the possible surplus thereof is pressed o. After being impregnated in this way the material is wound up on a bar or rod and introduced into a chamber, in which certain desired conditions of ternperature and humidity are maintained during a time period suiciently long to allow for the diffusion of the dye into the material or for the completion of the chemical reaction desired by the treatment in question.

In known plants for performing the above-mentioned method, the chamber is associated with the impregnating device in such a manner that the latter cannot be used during the long time period of maintenance of the textile material in the chamber, nor during the time required for the unwinding of the material from the rod of the chamber.

The present invention has for its object to eliminate this disadvantage and to effect a better utilization of the apparatus.

-In a plant for dyeing or other wet-treating of textile material, comprising a device for impregnating the material by its immersion into a bath of a dye solution or any other treating liquid and a chamber for maintaining the impregnated textile material at a raised temperature and in a moist atmosphere, according to the invention, this object is attained by providing the chamber as a separate unit and rendering the same movable in such a manner as to be easily brought into a position above the impregnating device suitable for receiving textile material therefrom and to be removed from such position.

Due to this feature, a plurality of chambers can be used with -a single impregnating device, so that the latter can be in operation almost continuously. This is not only of a great economic value but also is favorable for the maintenance of a constant temperature and other conditions of the bath. When one chamber is lled, the same is moved away, land another chamber is brought into the receiving position, so that `after merely a short interval the textile material can again be drawn through the bath in order now to be introduced into the new chamber. In order to enable an easy change of chambers and according to a further feature of the invention, a horizontal runway is arranged above and preferbaly on both sides of the impregnating device, and on this runway the chambers may be shifted so as to successively be brought into position for receiving the textile material yfrom the impregnating device. yIn order to make the plant equally efficient, in -respect of the treatment of the textile material, with as known corresponding plants having a statetll tionary preserving chamber, according to a secondary feaf Y, *Y I ICC ture of the invention measures are taken for protecting the textile material against cooling or evaporation during its transfer -from the impregnating device to the chamber. According to a preferred embodiment of this feature, the impregnating device comprising the bath vat and a pair of press rolls has positioned thereabove a hood for collecting the steam given ol from the bath or separately supplied and for guiding the steam along the textile material, where the same moves upwardly from the pair of press rolls. The hood has at its upper part a slit-shaped opening for letting out the textile material and steam of the hood. Thus, during its transfer to the chamber the material is enclosed within a steam atmosphere, and the material is not exposed when passing the gap necessary for the shifting of the chambers. To the same end it is also preferable to provide the chamber at its under side with an inlet opening adapted to be placed essentially straight above the impregnating device, for instance above the above-mentioned hood, so that the textile material can be drawn from the hood in a mainly straight path up to and through that opening of the chamber.

The invention will be more closely described herein below with reference to the accompanying drawing, which diagrammatically shows a preferred embodiment of a dyeing plant of the above-mentioned kind.

Figure 1 is a side elevational view, partly in section, of a textile material treating apparatus embodying the principles of the present invention; and Figure 2 is a fragmentary, enlarged cross-sectional view taken along the line 2 2 of Figure l.

The drawing shows an impregnating device 11 and number of chambers 13 adapted to cooperate one at a time with the impregnating device. The device 11 consists of a vat 15 containing a bath of a dye solution heated to a temperature of 50-100 C., and a pai-r of rubbercovered press rolls 17 and 19 arranged above the vat. The textile material that should be dyed, is assumed to be cloth or any other fabric and is in the shape of a web 23 drawn from a pack 21 over guiding rolls 24, some of which may be driven, down into the bath and then up between the rolls 17 and 19. The web may be heated by means of radiant lamps 25, before being brought down into the bath, in order not to cool the same.

When passing the bath the dry cloth web absorbs dye solution therefrom. The absorbed solution is then equalized over the cloth material and the surplus is pressed olf when the web passes the pre-ss rolls, so that the cloth web leaving them is evenly impregnated with a desired quantity of dye solution. In order to make it possible for the dye to diffuse into the textile material, the cloth should thereafter be maintained during a certain time at a raised temperature and in an latmosphere saturated or nearly saturated with moisture. This maintenance takes place in the chamber 13.

Each of the chambers 13, which all are of the same construction, houses a rod 27, on which the cloth web can be wound up and which is `driven by a device, as, for example, an electrical motor 2t) as shown in Figure 2. The chamber is closed at its top as well as at its long and short side walls. The bottom of the chamber is wholly or partly open, forming an inlet opening 28 for the cloth to be wound upon the rod 27. When a complete roll is formed on the rod, the opening is closed by a sliding lid 29, any other shutter or simply by a blanket. In order to prevent condensation on the inside of the walls of the chamber, the same may be heated by means of electric heating elements 30 to a temperature somewhat higher than the temperature of impregnation, and it may also be advantageous to provide the chamber with a double shell 13. Along the longer sides of the chamber there are troughs 31 for water, which can be evaporated by means of a heating coil 32 immersed there- 3 in, in order to maintain a moisture-saturated atmosphere in the chamber.

The chamber can be run on four wheels 33 (a pair at each end) which run on two parallel horizontal rails or beams 35, leaving between themselves a suiiicient space for the web 23 to be drawn up therebetween. The beams 35 are carried by pillars 37 and extend in both directions from the .impregnating device 11. By shifting on the track formed by the beams, the chambers 13 may, as required, be brought successively into the shown centre position, in which the chamber is located straight above the impregnating device and in which position cloth can be wound upon the rod of the. chamber. Chambers Nos. l, 2 and 3 counted from the left in Figure l of the drawing, take up positions in which the textile material is merely preserved in order to aiOrd time for the dye to penetrate therein. In this position, the rod is slowly rotated in order to facilitate the equalization of the dye, and the desired condition of temperature and humidity is maintained, for instance, by means of automatic control devices. Chamber No. is in its unwinding position. The bottom shutter is opened, and the cloth is drawn out around a guiding roll 39 and goes to further treatment. At the other end of the beam traclt 35 is a corresponding guiding roll 41, which is used when the chambers Nos. 1 and 2 should be emptied of cloth.

Arranged above the impregnating device 11 is a funnelshaped hood 43, which serves to collect steam given od by the heated bath.

The hood extends up between the beams 35 and is provided at its uppermost part, which barely lets the bottom of the chambers i3 pass when they are shifted on the truck, with a slit-shaped opening 45, through which the cloth web can be fed out for transfer to the rod 2.7 in the chamber 13. Located within the hood are guiding rolls 47, 49 for the cloth web, by means of which rolls the same is guided approximately straight upwards and is held in the centre of the funnel, so that the web is surrounded on both sides by the steam collected in the hood. The steam protects the cloth web against evaporation and cooling, andthe cloth web is therefore let out through the nozzie i5 with about the same temperature as at the press rolls i7, i9. The steam strives to rise, and on account of leakage through the opening 45 a restricted flow of steam is maintained along the cloth web on both sides of the same; this applies to the section of the web within the hood as well as to the section positioned in the free gap between the hood and the chamber i3. The opening 45 is of such a small cross-section that the upward moving steam does not suck with it air, which would effect cooling. Preferably the hood is maintained filled with steam from the bath, so that steam iiows out around the lower edge of the hood. However, if the steam quantity given off by the bath is too small, which may be the case when the bath temperature is comparatively low, steam taken from elsewhere can be supplied into the hood through nozzles Si) provided for this purpose.

The steam emanating from the opening 45 Hows up into the chamber i3 where it forms or contributes to form the warm and moisture-saturated atmosphere, in which the textile material should be wound upl and preserved. If necessary, the chamber may be heated and filled with steam beforehand in order that the atmosphere therein should have the right temperature and moisture content already from the beginning of the winding.

Of course, the invention is not restricted to the abovedescribed embodiment, which can be modified as to its constructional details and its application. Thus, the plant can be used not only for dyeing but also for other wet-treatments, for instance for lye treatment or bleaching. When the chemicals used are corrosive, the impregnation may ltake place in cold condition and the textile material may be heated at Iirst in connection with its transfer to the preserving chambers. Such heating can be provided by radiation heaters 52 located in the hood 43 and/or by means of steam injected therein. The plant can be used not only for treating fabrics but also yarns, aid other forms of textile materials.

I claim:

1. An apparatus` for wet treatment of textile material, comprising, an impregnating device, a chamber having means for maintaining a heated moist atmosphere therein, said chamber having a bottom opening, -rneans connecting said impregnating device and said chamber through said bottom opening so that textile material impregnated in said device can be conveyed from the device to said chamber in a controlled atmosphere, means in said chamber for storing impregnated textile material conveyed thereto, and means mounting said chamber for substantially horizontal movement above said device whereby said chamber may be moved from a textile receiving position above said impregnating device to a storage position and another similar preserving chamber can be positioned above said impregnating device while said first chamber is in the storage position.

2. An apparatus for wet treatment of textile material including an impregnating device comprising a vat for containing a bath of treating liquid to be impregnated 4in a web of textile material and a pair of press rolls positioned to receive the web therebetween for pressing oit excessive treating liquid from the web after its immersion into said bath, archamber having means for maintaining said impregnated textile material at a raised temperature and in a moist atmosphere, a horizontal runway located at a Ahigher level than said impregnating device, said chamber having an opening therein for receiving the web, and means in said chamber for winding and supporting the web passing through said opening, said chamber being movable on said runway between a position straight above said impreguating device and positions distant therefrom whereby said chamber can receive textile material from said impregnating device while in position above said impregnating device and said impregnating device is available for loading similar chambers while said chainber is in position distant from said impreguating device.

3. In an apparatus for wet treatment of a web of textile material comprising a vat for receiving a treating liquid, means for moving said web through said vat, a pair of press rolls positoned to receive the web therebetween for pressing oif excessive liquid carried by the web from said vat, means guiding the web in a substantially vertical path upwardly from said press rolls, a hood enclosing said vertical web path, said hood having an opening at its top, and a chamber having means for winding and maintaining a wound roll of textile material in a heated moist atmosphere, means mounting said chamber for horizontal movement into a position above said outlet opening of the hood, in which position said web can be introduced into said chamber, said chamber also being movable into a storage position away from said opening whereby a similar chamber can be positioned above said outlet opening of the hood to receive textile material while said first chamber is in storage position.

4. In an apparatus for wet treatment of a web of textile'rnaterial; means for impregnating the web by its imrnersion into a bath of treating liquid and subsequent pressing-off of excessive liquid, a chamber having means for maintaining said web in a heated moist atmosphere, said chamber having a bottom inlet for the introduction of impregnated textile material there-through, means in said chamber for winding the web of textile material introduced thereon and for supporting a wound roll of such material, a horizontal track located at a higher level than said impregnating means, and means mounting said chamber on said track for movement between a position straight above said impregnating means, whereby the web can be transferred from the impregnating device in a mainly vertical path to said bottom inlet of the chamber, and a position away from said impregnating means,

whereby the web can be transferred from the impregnating means in a mainly vertical path to a similar chamber positioned on said track above said impregnating means.

5. In an apparatus for dyeing a web of textile material, means for impregnating said web with a dye solution, a hood covering said means for collection of vapor given off by said dye solution, a narrow outlet opening at the top of said hood, a chamber having means for maintaining impregnated textile material in a heated moist atmosphere, said chamber having an inlet opening at its bottom, means mounting said chamber for horizontal displacement in such a manner that said inlet opening of the chamber can be placed straight above said outlet opening of the hood, and in a storage position away from said outlet opening, and means for moving the web in-an essentially vertical path through said hood and said outlet and inlet openings, said last-mentioned means including means in said chamber for winding said web and supporting the same in a wound condition, whereby when said chamber is in storage position, a similar chamber can be positioned over said outlet opening to receive said textile material.

6. In an apparatus for dyeing a web of textile material, means for impregnating the web with a dye solution comprising a dye vat and a pair of press rolls, a chamber for preserving having means for maintaining the impregnated web in a heated moist atmosphere, a rurway located at a higher level than said impregnating means, means maintaining said chamber for horizontal movement on said runway into a web receiving position above said means and into a storage position away from said impregnating means, said chamber having aninlet opening in the bottom thereof, and means Ifor moving the web through said impregnating vat, between said press rolls and therefrom in an essentially vertical path upwardly into said chamber when said chamber is in said web receiving position, said last-mentioned means includ ing means in said chamber for winding said web and supporting the same in a wound condition, a hood for protecting the web against cooling and moisture evaporation extending on both sides of the web from said press rolls to the neighbor-hood of the bottom of said chamber when in its web receiving position.

References Cited in the le of this patent UNITED STATES PATENTS Germany Iuly 13, 1911 

